import java.util.Scanner;

public class Main {
    //洗牌
    public static void main(String[] args) {

    }


    //MP3光标位置
    /*public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] root = new int[n];
        for(int i = 0; i < n;i++){
            root[i] = i + 1;
        }
        in.nextLine();
        String s = in.nextLine();
        int j = 0;//读取指令（指令下标）
        int cur = 0;//光标
        if(n<=4&&n>0){
            while(j < s.length()){
                if(s.charAt(j) == 'U'){
                    if( cur == 0){
                        cur = root.length -1;
                    }else{
                        cur--;
                    }
                }
                if(s.charAt(j) == 'D'){
                    if(cur == root.length-1){
                        cur = 0;
                    }else{
                        cur++;
                    }
                }
                j++;
            }
            for(int x:root){
                System.out.print(x+" ");
            }
            System.out.println();
            System.out.println(root[cur]);




        }else if(n>4){

        }else{
            System.out.println(-1);
        }

    }*/
}